Information on cPanel Service Daemons - PowerPoint PPT Presentation

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Information on cPanel Service Daemons

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cPanel service daemons refer to the services that are present on the cPanel & WHM servers. In cPanel & WHM version 76 and the later versions, certain server profile configurations affect the availability of the server. – PowerPoint PPT presentation

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Title: Information on cPanel Service Daemons


1
Information on cPanel Service Daemons
2
Table of Contents
  • Introduction
  • Web Server
  • Daemons on cPanel WHM Servers
  • Daemons on cPanel WHM Servers (Continued)
  • Daemons on cPanel WHM Servers (Continued 1)
  • Daemons on cPanel WHM Servers (Continued 2)
  • Daemons on cPanel WHM Servers (Continued 3)
  • Daemons on cPanel WHM Servers (Continued 4)
  • Daemons on cPanel WHM Servers (Continued 5)
  • Daemons on cPanel WHM Servers (Continued 6)

3
Introduction
  • Information is being provided here on the
    services (daemons) which exist on cPanel WHM
    servers. A daemon is a process that runs in the
    servers background. It isnt under the control
    of the user.
  • The WHM API 1 servicestatus function needs to be
    run in order to view the complete list of daemons
    on the server. The Service Manager interface in
    WHM needs to be used for viewing a list of
    daemons that can be enabled and monitored through
    the interface.
  • WHM gtgt Home gtgt Service Configuration gtgt
    Service Manager
  • It needs to be mentioned here that in the version
    76 and the later versions of cPanel WHM, a
    services availability is affected by certain
    server profile configurations.

4
Web Server
  • A web server is a server that is used for the
    purpose of web hosting by web hosting companies.
    Web hosting is the service through which websites
    are made accessible online. The web contents of
    websites are stored on web servers. These files
    include HTML documents, videos, images, fonts,
    JavaScript files, CSS stylesheets, etc.
  • Web hosting can be of many types, such as shared,
    dedicated, reseller, cloud, VPS, and WordPress.
    The Top Cloud Hosting, the Best Linux
    Dedicated Hosting, the Best Windows Shared
    Hosting are some of the terms that are used to
    refer to the most popular hosting services.
  • In the following slides, certain daemons will be
    described along with their service names.

5
Daemons on cPanel WHM Servers
  • The following services (daemons) exist on cPanel
    WHM servers
  • apache_php_fpm The performance of the PHP-based
    internal applications of EasyApache 4 is improved
    by this daemon. Its service name is PHP-FPM
    service for Apache. This is only available on
    those systems that run EasyApache 4. The PHP-FPM
    daemon cannot be installed or removed in this
    interface.
  • Clamd The server is scanned for malicious
    programs by this daemon. The Manage Plugins
    interface in WHM is used for installing or
    uninstalling ClamAV. Its service name is ClamAV
    Daemon.
  • cpanel-dovecot-solr - Fast search capabilities
    with regard to IMAP mailboxes is provided by this
    daemon. Manage Plugins interface in WHM needs to
    be used for installing or uninstalling IMAP
    Full-Text Search. Its service name is IMAP
    Full-Text Search (FTS) Indexing (Powered by
    Apache Solr).
  • cpanel_php_fpm The performance of PHP-based
    internal applications, which ship with cPanel
    WHM, is improved by this daemon. These include
    phpMyAdmin, phpPgAdmin, Webmail applications and
    any user-installed, third-party PHP application.
    Its service name is PHP-FPM service for cPanel
    Daemons. A maximum of 10 concurrent processes per
    user will be accelerated by this service.

6
Daemons on cPanel WHM Servers (Continued)
  • cpanellogd cPanel WHM log files are
    compressed and archived into a single file for
    each type by this daemon. It is done at the end
    of every month. Its service name is cPanel Log
    and Bandwidth Processor.
  • cpdavd A set of HTTP extensions is enabled by
    this daemon. These extensions let users manage
    their websites remotely. You should not disable
    this daemon if you want to host others websites
    on your own web server. Its service name is
    cPanel DAV Daemon.
  • cpgreylistd The service of Greylisting is
    managed by this daemon. This service protects the
    server against spam from unrecognized sources.
    Its service name is cPanel Greylisting Daemon.
  • cphulkd cPHulk Brute Force Protection is
    managed by this daemon. This service provides
    protection to the server against brute force
    attacks. Its service name is cPHulk Daemon.

7
Daemons on cPanel WHM Servers (Continued 1)
  • cpsrvd This daemon functions as the application
    server for Webmail services, cPanel and WHM. Its
    service name is cPanel Server Daemon.
  • crond It is the cron scheduling daemon. Its
    service name is Cron Daemon.
  • dnsadmin It runs as a standalone daemon. It
    aids in enhancing speed but causes an increase in
    the memory usage. This option should be
    deselected when multiple dnsadmin processes are
    being used for zone-related actions. Its service
    name is cPanel DNS (Domain Name System) Admin
    Cache.
  • exim Its service name is Exim Mail Server. The
    SMTP mail server daemon is that part of your mail
    server which receives and sends mails. It is
    recommended that this feature be enabled and
    monitored for most servers.

8
Daemons on cPanel WHM Servers (Continued 2)
  • exim-altport Its service name is Exim Mail
    Server (on another port). This is an option for
    configuring Exim to listen to an additional port.
    In it, the additional port number needs to be
    entered on which Exim is supposed to run. By
    default, 25, 465 and 587 are the ports to which
    Exim listens.
  • ftpd The FTP server is run by the FTP server
    daemon. This feature should be enabled when
    others websites are hosted on your web server.
    This feature needs to be monitored. Its service
    name is FTP (File Transfer Protocol) Server.
  • httpd Its service name is Web Server. This
    daemon processes visitors HTTP requests. This
    feature needs to be enabled for hosting websites
    with your web server. When this daemon is
    disabled, the cpsrvd daemon assumes control over
    HTTP on the ports, 80 and 443.
  • imap This daemon for Dovecot processes the way
    in which the users download their mail. It is
    recommended that this daemon be monitored. Its
    service name is IMAP (Internet Mail Access
    Protocol) Server.

9
1-800-123 -8156
  • Whoa! Thats a big number, arent you
    proud?

10
Daemons on cPanel WHM Servers (Continued 3)
  • ipaliases Its service name is IP (Internet
    Protocol) Aliases. It enables the addition of
    more than one IP address to a network adapter.
    This configuration can be used to run multiple
    connections on a single network, wherein an
    additional purpose is served by each connection.
  • lmtp Its service name is LMTP (Local Mail
    Transport Protocol) Server. The LMTP server lets
    Exim connect to the Dovecot mail server.
  • mailman Its service name is Mailman. The
    creation of a single email address for sending
    mail to many email addresses is ensured by the
    Mailman mailing list manager for the users. The
    Mailman service is not started by the system
    until at least one mailing list is hosted by the
    server.
  • mysql Its service name is MySQL or MariaDB
    Server. Database queries are processed by the
    MySQL database server. This feature or the
    postgresql server needs to be enabled if any
    content management systems or applications which
    need a database are supposed to be hosted. Since
    the system does not monitor this daemon by
    default, it is recommended that this daemon be
    monitored.

11
Daemons on cPanel WHM Servers (Continued 4)
  • .
  • named The nameservers are run by the BIND
    (Berkeley Internet Name Domain), NSD, MyDNS, or
    PowerDNS daemon. This daemon should only be
    enabled when you want to use your own
    nameservers. Its service name is DNS (Domain Name
    System) Server.
  • nscd A cache for name service requests is
    managed by this daemon. It is recommended that
    this service be only enabled on servers that have
    at least 1,000 MB of available memory. Its
    service name is Name Service Cache Daemon.
  • P0f Its service name is Passive OS (Operating
    System) Fingerprinting Daemon. The p0f (Passive
    OS Fingerprinting) daemon ensures that the
    operating system of the visitor is reported along
    with other information with regard to email
    notifications which are requested by the system
    administrator in the interface, Contact Manager.
    This information proves to be helpful for a
    system administrator as it helps him to quickly
    identify those visitors that trigger events which
    cause alerts. This information is used by the
    spam prevention and cPHulk systems for
    identifying potential spammers and brute force
    attacks. When this daemon is disabled, the
    visitor information will no longer be contained
    in the notifications footers.

12
Daemons on cPanel WHM Servers (Continued 5)
  • pop The way in which users will download their
    mail is processed by the POP3 daemon. The
    monitoring of this daemon is strongly
    recommended. That is because the system does not
    monitor this daemon by default. Its service name
    is POP3 (Post Office Protocol 3) Server.
  • Postgresql Database queries are processed by
    the PostgreSQL database server. Either this
    feature or the mysqld server need to be enabled
    when any content management system or such
    applications which require a database need to be
    hosted. In the version 76 and the later versions
    in cPanel WHM, this service is disabled by the
    Mail Node server profile. Its service name is
    PostgresSQL Server.
  • queueprocd Its service name is TaskQueue
    Processor. The task queue is processed
    periodically by the TaskQueue Processor. It is
    present in the directory, /usr/local/cpanel/libexe
    c.
  • rsyslogd Its service name is System Logger
    Daemon and it is highly recommended that this
    daemon be enabled. The web server is monitored by
    the system log daemon. It logs the system
    activity.

13
Daemons on cPanel WHM Servers (Continued 6)
  • spamd Its service name is Apache SpamAssassin.
    This daemon tries to filter spam messages. When
    you disable this daemon, ensure to disable it in
    the Tweak Settings interface in WHM. WHM gtgt Home
    gtgt Server Configuration gtgt Tweak Settings
  •  sshd Its service name is SSH (Secure Shell)
    Daemon. This daemon lets the users connect to the
    server in a terminal session via SSH.
  •  syslogd Its service name is syslog System
    Logger Daemon. The monitoring as well as the
    logging system information of the web server is
    handled by this daemon.
  •  tailwatchd Its service name is TailWatch
    Daemon. Certain activities of a log file are
    monitored by the TailWatch daemon. Subsequently,
    an action is performed by it, depending on the
    activity.
  •  tomcat Its service name is Tomcat Server.
    Tomcat is essentially an Apache module. A web
    server is provided by it, in addition to the
    Apache web server. New installations of Tomcat
    are not supported by EasyApache 3.

14
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